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2013-02-27xz: fix incorrect XZ_BUF_ERRORLasse Collin
xz_dec_run() could incorrectly return XZ_BUF_ERROR if all of the following was true: - The caller knows how many bytes of output to expect and only provides that much output space. - When the last output bytes are decoded, the caller-provided input buffer ends right before the LZMA2 end of payload marker. So LZMA2 won't provide more output anymore, but it won't know it yet and thus won't return XZ_STREAM_END yet. - A BCJ filter is in use and it hasn't left any unfiltered bytes in the temp buffer. This can happen with any BCJ filter, but in practice it's more likely with filters other than the x86 BCJ. This fixes <https://bugzilla.redhat.com/show_bug.cgi?id=735408> where Squashfs thinks that a valid file system is corrupt. Thanks to Jindrich Novy for telling me that such a bug report exists, Phillip Lougher for providing excellent debug info, and other people on #fedora-ppc. This also fixes a similar bug in single-call mode where the uncompressed size of a XZ Block using BCJ + LZMA2 was 0 bytes and caller provided no output space. Many empty .xz files don't contain any Blocks and thus don't trigger this bug. This also tweaks a closely related detail: xz_dec_bcj_run() could call xz_dec_lzma2_run() to decode into temp buffer when it was known to be useless. This was harmless although it wasted a minuscule number of CPU cycles. Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27xz: fix decoding of LZMA2 streams having no uncompressed data.Lasse Collin
No .xz encoder creates files with empty LZMA2 streams, but such files would still be valid and decompressors must accept them. Note that empty .xz files are a different thing than empty LZMA2 streams. This bug didn't affect typical .xz files that had no uncompressed data. Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27cz: add C++ support to xz.hLasse Collin
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27xz: remove an empty line from xz_dec_lzma2.cLasse Collin
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27xz: make bcj_x86_test_msbyte() an inline functionLasse Collin
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27xz: add a comment about using uint32_t as vli_typeLasse Collin
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27xz: avoid "NOTE:" in xz.hLasse Collin
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27xz: update READMELasse Collin
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-27xz: omit explicit \0 from HEADER_MAGICLasse Collin
Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-02-20rpm: use "create+rename" method of replacing existing filesDenys Vlasenko
Users were reporting getting errors like "ls: error while loading shared libraries: libc.so.6: ELF load command past end of file" while rpm was unpacking glibc tarball. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2013-01-14whitespace cleanup. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-12-05decompress_uncompress: comment out a bigger chunk of debug codeDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-12-05decompress_uncompress: comment out debug printout on corrupted dataDenys Vlasenko
99% plus of all people who'll get corrupted archive wouldn't bother debugging it. The rest can uncomment the code. function old new delta unpack_Z_stream 1304 1234 -70 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-12-05decompress_uncompress: move 'code' variable into loop - sole userDenys Vlasenko
Apparently, gcc does this optimization itself, since generated code is the same. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-06-22dpkg: fix creation of .list files (were empty since b768aeb). Closes 5324Denys Vlasenko
While at it, fix filename order and free the list of names. function old new delta llist_rev - 21 +21 get_header_tar 1733 1741 +8 unpack_package 587 585 -2 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 1/1 up/down: 29/-2) Total: 27 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-06-22trivial small speed optimizationDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-06-09tar: fix 256-bit encoded number decodingEtienne Le Sueur
Signed-off-by: Etienne Le Sueur <elesueur@vmware.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-05-20build system: fix build failure when only gunzip is selectedAnthony G. Basile
Signed-off-by: Anthony G. Basile <blueness@gentoo.org> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-04-29fix build failure when compressed help is selected, but bz2 compression is notDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-04-20Fix another build failure found with randconfigDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-04-20fix build breakage found by randconfigDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06fix trivial bug in unpack_gz_stream (wrong fd used in read)Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06Don't compile get_header_tar_FOO function if they are not neededDenys Vlasenko
Now get_header_tar_gz, get_header_tar_bz2, get_header_tar_lzma are only used if dpkg is built. Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06tar,rpm2cpio: check that child decompressor did not error outDenys Vlasenko
function old new delta check_errors_in_children - 57 +57 tar_main 833 848 +15 get_header_tar 1720 1733 +13 rpm2cpio_main 147 140 -7 handle_SIGCHLD 41 - -41 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 2/1 up/down: 85/-48) Total: 37 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06Move seamless .Z support into unpack_gz_streamDenys Vlasenko
unpack_gz_stream 566 643 +77 unpack_gunzip 123 12 -111 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06update seamless uncompression codeDenys Vlasenko
This change makes "tar tf hello_world.txz" work without adding special-casing for ".txz" extension. It also removes ever-growing magic checking code in rpm2cpio and get_header_tar - we reuse one which lives in setup_unzip_on_fd. function old new delta unpack_gz_stream 7 566 +559 check_signature16 - 70 +70 setup_unzip_on_fd 99 142 +43 handle_SIGCHLD - 41 +41 unpack_bz2_stream 342 376 +34 unzip_main 2352 2385 +33 bbunpack 503 533 +30 open_transformer 74 102 +28 unpack_Z_stream 1278 1304 +26 unpack_gunzip 101 123 +22 init_transformer_aux_data - 18 +18 unpack_xz_stream 2388 2402 +14 open_zipped 131 141 +10 rpm_main 1358 1363 +5 get_header_tar_lzma 52 57 +5 get_header_tar_bz2 52 57 +5 unpack_lzma_stream 2698 2702 +4 hash_find 234 233 -1 get_header_tar 1759 1733 -26 get_header_tar_gz 92 57 -35 unpack_uncompress 51 12 -39 rpm2cpio_main 201 147 -54 unpack_unxz 67 12 -55 unpack_bz2_stream_prime 55 - -55 get_header_tar_Z 86 - -86 unpack_gz_stream_with_info 539 - -539 ------------------------------------------------------------------------------ (add/remove: 3/3 grow/shrink: 14/6 up/down: 947/-890) Total: 57 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06archival/libarchive/decompress_unzip.c -> decompress_gunzip.c. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-03-06preparatory cleanups for seamless uncompression improvementsDenys Vlasenko
unpack_gz_stream_with_info: fix buggy error check man: fix possible accesses past the end of a string move seamless uncompression helpers from read_printf.c to open_transformer.c function old new delta show_manpage 153 212 +59 unpack_gz_stream_with_info 520 539 +19 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2012-02-23tar: add support for PAX-encoded path=LONGFILENAMEDenys Vlasenko
function old new delta get_header_tar 1478 1759 +281 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-10-31bzcat: fix unpacking of more than one file, and unpacking of zero-size bz2. ↵Denys Vlasenko
Closes 4393 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-10-19get_header_tar: shrink 6->64 sign extension codeDenys Vlasenko
function old new delta getOctal 125 107 -18 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-09-22rename archive.h to bb_archive.h. no code changesDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-09-10regularize options which control size/speed tradeDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-08-22uncompress: die on read errorsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-08-18uncompress: fix buffer underrun by corrupted inputDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-07-29tar: ignore file size (assume 0) for hardlinksIan Wienand
Signed-off-by: Ian Wienand <ianw@vmware.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-05-13fix "variable 'foo' set but not used" warningsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-03-08use user's shell instead of hardwired "/bin/sh" (android needs this)Denys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-03-02tar: skip leading / and handle names like abc/..////def -> def (not ///def)Denys Vlasenko
function old new delta strip_unsafe_prefix - 105 +105 writeFileToTarball 557 520 -37 get_header_tar 1545 1462 -83 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-03-01tar: on extract, everything up to and including last ".." is strippedDenys Vlasenko
function old new delta get_header_tar 1493 1545 +52 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-02-06tar: fix a bug where autodetection messes up -z on extractDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2011-01-16remove a few aliasing warningsDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-12-30bzip2: plug memory leak on every processed fileDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-11-03rename archival/libunarchive -> archival/libarchive; move bz/ into itDenys Vlasenko
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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